| 摘要: |
| 依据4年小麦田间结露研究及农田小气候观测资料，确定了陕西省杨陵区二道塬麦田2/3株高处露的形成和消失条件分别为周围空气相对湿度≥91%及≤89%；分析了麦田露形成、消失和持续时间的垂直分布规律。4月中旬～5月下旬麦田2/3株高处的露时平均为12.77～13.64h，最长达15.84h；露量平均为0.07～0.10mm，最大达0.18mm． |
| 关键词: 露，露时，露量，小麦田 |
| DOI： |
| 分类号:S162.4 |
| 基金项目:陕西省重点科技项目资助课题 |
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| Dewfall in Wheat Fields |
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| Abstract: |
| Based on the 4 years' study of dewfall in wheat fields and the observed
and determined data of farmland microclimate,this paper analysis the conditions of dew
condensation and disappearance at the 2/3 plant height of wheat in wheat fields on the
second tablel and of Yangling District of Shaanxi Provinee,i.e,they are over or equal to
91% and less than or equal to 89% of the relative humidity in the ambient air respectively.Also,this paper analysis the vertical distribution law of time for dew condensation,
disappearance and duration.The mean dew duration is 12.77～13.64h;the longest dew
duration is 15.84h;the mean quantity of dew is 0.07～0.11mm;and the maximum dew
is 0.18mm at the 2/3 plant height of wheat in wheat fields from the second decade of
April to the third decade of May. |
| Key words: dew,dew duration ,dew quantity,wheat field |
